cramer



O. P. CRAMER CASEMENT WINDOW HINGE Filed March 6. 1951 Sept. 6, 1.932.

INVENTOR. OTTO P CPA/14E@ BY '/v` ATTORNEYk -V il ..7 y

Patented Sept. 6, 1932 PATE Nr oFFlcE CTTCBCRAMER, or sAN FRANCISCO, CALIFORNIA CASEMENT WINDOW IHINGE Application filed March 6,

My invention relates to a Casement window hinge, and particularly to such a hinge having alatch operable therewith.

It is among the objects of my invention to `provide a hinge which will maintain an open window in a selected position. y

A further obj ect of my invention is the provision, in a hingeof the character described, of means for automatically locking the winga dow in open position in the event that it is blownv open by winddue to failure to engage Vthe manual latching means, orto accidental l disengagement of the latching means. f

The invention possesses other objects and 3,5, features of advantage, some of which, with the foregoing, will be set forth in thefollowing description of my invention. It is to be understood that Iv do not limit myself to this disclosure of species of my invention, as I within the scope ofthe claims. Referring to the drawing:

Figure 1 is a plan view of the hinge emhodying my invention; portions of a casement and Casement frame being shown in dotted lines to indicate the operative relationship. y

Figure 2 is a vertical sectional view taken in a plane indicated by the line 2 2 of Figscale than Figurel to show the construction more clearly. Y i l In terms of broad inclusion the easement window hinge of my invention comprises a base plate adapted to be ysecured to a window frame and having a shoe slidably arranged thereon. A swing plate, adapted to be sel Acally therefrom and providedfwith a downwardly hooked flange 6, spaced from the side wall to form a guide groove 7.

may adopt variant kembodiments thereof ment, is extremely remote.

ure 1; the figure being drawn to a larger` In greater detail, the hingev `of my inven-l 1931. seriai 110,529,641.'

tion comprises a base plate 2 whichis adapted to he secured, by means of the screws 3, to a yCasement frame, indicated in the drawing by dotted lines 4. The baseplate is preferably formed with a side wall 5 rising verti- D shoe 8, slidable along the base plate, has formed along one of its sides a U-shaped .flange,`comprising the walls 9 and 11'l spaced apart to form a channel 12 in which the flange 6 of the base plate is adapted to slidably engage. The upper portion of the wall 9 engages in the groove 7 land completes an inter- 00 lockino' joint between the base plate andthe shoe.v zDlt will be Vseen that, since the guidey groove 7 is inverted and the flange 6`does not completely fill the channel 12, the chance of dirt, paint or other foreign matter accumulating on the sliding surfaces is reduced to avminimum- The other side of the shoe is providedwith avlange 13 extending downwardly to bear on the base plate 2.l ,Dueto' y'the fact that the bearing surface of this flange 70 is narrow, the possibility of matter collecting thereon, which would hinder its free move- ,A swing plate 14 is provided, and is pivotally mounted on the shoe 8 by means of a suitablepivot pin, such as the rivet 10. The swing plate `is adapted to support a window sash, indicated in the drawing by the dotted lines 16; connection between the casing and swing platebeing effected by the screws 17. A link. 18 is provided, and is pivotally connected to the swing plate and the base plate by suitable pins, such as the rivets 19 and 21.-

VMeans are provided for locking the shoe to the base' plate 'at selected intervals. Piv-v 55 otally secured in thev shoe by means of the pin 22, and extending Voutwardly therefrom, is

'alever 2,3 provided at its outer end with a Y pair .of'upturned flanges 24, which serve to form a handle by which the lever isactuated.

5U should a sudden strong breeze arise,`theout ""wardswing ofthe Casement caused thereby "1 will actuate the automatic'lateliingmeans and p'preventfurther 'bufleting thereof with its 'consequent'dainage toA` glass," frame* and other component parts.

A latch bolt 26, slidably positioned in apertures 27 in the walls 9 and 11 of the shoe, is pivotally engaged with the lever 23 thru a pin 28. Suitable apertures 29 adapted to receive the bolt 26 are formed in the side wall 5 and are spaced at intervals therealong. Manual operation of the lever 23 causes the latch bolt to pass into engagement with one of the apertures 29 to effectively lock the shoe in a selected position.

Means are provided for automatically engaging the latch bolt at a predetermined position, and Vmeans are 'further `provided for removably positioning the automatic means. A resilient arm 3l is positioned adjacent the outer limit of travel of th'e'sle,

and is provided with a hooked-'portion 32,

which engages in the groove 7 between the side wall 5 and the flange 6. Whenthe sash 16 is swung outwardly the shoe 8 is caused to slidealongthe base plate until the-end of the lever`23 iinpinges against Vthe arm 531, whereupon the lever is deflected Ato effect 'automatic engageiiieiit ofthe latch bolt in theoutern'io'st of the base plate apertures 29.

"Theiinal position of the shoe is indicated by y'dotted lines in Figure l. The engagement of the lever 23 with nthe `rarm v3lis timed yto loccur before the latch bolt is laligned with the final aperture 29, so asl to flex' the arm outlvwardly,therebyCreating a thrust upon the 'latch bolt which causes it Vto snap iin toengag'ement with the aperture whencorrle'lati-o'n between the two is attained.

Each time the :arm is-lexed 'a considerable force is ererted thereon tendingt'o dislodge 1 the hooked portion 32 from its seat.l To preclude suchdislod-gement a concavity 33 is formed in the arm 3llada`pted` to seatover therounded end' 34 of the link'l8. n positioningtheiarm; it is inserted betweenl the base lvplate flange and the end ofl the link and'for- 'cibly driven until it lsnaps into place. As l"airadded,precaution a nail' 36 lmayl be driven into: the window sill immediately behind the L y'arinkl to hold it in-r place.

yThe"case'n'ient hanger 4above describediis capable of being readilyinstalled inany type of swinging easement, whether it beZ hung to l swing horizontally or yertica'lly. The fea- Itures of'a manually operable latch by means 'of 'whiclhzthe easement may be locked in la selected'positiom'and of automatically funcinvention desirable, especially inlocalities where strong winds prevail. A' window emplovying this .hanger may be left open in un- V latcliedv position, with the knowledge that The absence of loose parts which would tend to rattle is another important feature. It is also to be noted that the positioning of Vthe latch apertures 29 prevents their being applications.

I claim: y y l. A easement window hinge comprising a base plate, a shoe slidably arranged on the base plate, a swing plate pivotally connected 'to 'the shoe, aflinkipivotally connecting the base plate and the swing plate, a latch for -lockingthe-'sho'e to'the base plate'at selected "intervals, and iii'iea'ns lfor automatically 'rendering the latch* operative ata predetermined position.

12. 'A easement window g'hinge vcomprising a base plate haviii'gfa pluralityofapertuies,

shoe' sli :dably arranged ent the vb aseplate and having an'ape'tur'etregistrable with a selected aperture in thev base" plate, swing plate pive PW' otally connecting thel baseE plat'eand the swing plate, 'ai latclr on: tl'reshoeY adapted 'I to proj ect thru the `shoeVapeiture, "manually operable means `fo'r"` eiteridingi the 'latch2 thru the shoe Yaperture and a sele'cte'dbase `plate aperture, and l means forf `automatica'll'y extending I the llatch tlirir the "shoe aperture and a baseplate *position f A easement Vwind'oiv hinge comprising a base plate, a"`shoe slidablyarranged on" the base plate, a swin'gplate pivotally' connected to the shoe, ai linkpivotaily connecting the plate and` theswin'g plate, a'latc/h onl the shoe, a lever operatively connecte-d with the latchand an v`-arin""o"ir the `base-plate forengaging the latch lever to actuate the latch.

"4. 'easement'window'hinge comprising a basel plate," a`s`hoe 'sli-dably arranged on the base plate, a swing plate piivotally connected vto'tlie"shoe,"a' linkl pivota' l`y connecting the base plateand the swing plate, ailateh' on tlie`shoe,""aflever:operatively connected with 'Artionin'g latching means, for securing the casei inent in open position, make the'hanger of my f.' y

i the latch.

.' 5.'A easement 'windowJ 'hinge comprising 'a base plate," a shoe slidablyarranged on the baselplate,a platepivotally 'connected shoe, a lever operatively Connected' with the latch, and an arm"removablypositioned' on the `base plate for actuating the" latch lever to attuate theme11.

6. A easement Window hinge comprising a hase plate having apertures therein, a shoe 1n interlocking engagement With the base plate and slidable therealong, a swing plate pivotally connected tothe shoe, a link pivotally connecting the base plate and the swing plate, a latch on the shoe adapted to engage with said apertures, manually operable means for engaging the latch with a selected aperture, and a resilient arm removably mounted on the base plate for automatically engaging the latch With an aperture to clog the shoe at the outer limit of its travel. K

In testimony whereof, I have hereunto set my hand.

OTTO l. CRAMER.k 

